body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

.clock-container {
    text-align: center;
}

#clock {
    font-size: 3rem;
    font-weight: bold;
    color: #333;
}